28061485 has 8 divisors (see below), whose sum is σ = 33797016. Its totient is φ = 22367040.

The previous prime is 28061477. The next prime is 28061519. The reversal of 28061485 is 58416082.

It can be written as a sum of positive squares in 4 ways, for example, as 1052676 + 27008809 = 1026^2 + 5197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28061485 - 2³ = 28061477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28061485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8746 + ... + 11515.

It is an arithmetic number, because the mean of its divisors is an integer number (4224627).

Almost surely, 2^28061485 is an apocalyptic number.

It is an amenable number.

28061485 is a deficient number, since it is larger than the sum of its proper divisors (5735531).

28061485 is a wasteful number, since it uses less digits than its factorization.

28061485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20543.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28061485 is about 5297.3092226148. The cubic root of 28061485 is about 303.8810021617.

The spelling of 28061485 in words is "twenty-eight million, sixty-one thousand, four hundred eighty-five".